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Scaled physical modeling is an important means to understand the behavior offluids in nature. However, a common source of errors is conflicting similaritycriteria. Here, we present using hypergravity to improve the scaling similarityof gravity-dominated fluid convection, e.g. natural convection and multi-phaseflow. We demonstrate the validity of the approach by investigating water-brinebuoyant jet experiments conducted under hypergravity created by a centrifuge.Results show that the scaling similarity increases with the gravitationalacceleration. In particular, the model best represents the prototype under N3gwith a spatial scale of 1/N and a time scale of 1/N2 by simultaneouslysatisfying the Froude and Reynolds criteria. The significance of centrifugeradius and fluid velocity in determining the accuracy of the scaled model isdiscussed in the light of Coriolis force and turbulence. This studydemonstrates a new direction for the physical modeling of fluids subject togravity with broad application prospects.

Spatial and temporal scaled physical modeling of fluid convection using hypergravity